Scroll-cutting machine



J. H. BEHEE.

SCROLL CUTTING MACHINE.

APPLICATION FILED AUG.I9, 1913.

4 SHEETS$HEET 1- NV NTOR. f. f/Z'd ZTTORNEY Patented Apr. 20, 1920.

B Y WW1 Wlj'NES-S.

J. H. BEHEE.

SCROLL CUTTING MACHINE.

- APPLICATION FILED AUG.I9, 191s.

Patented Apr. 20, 1920.

4 SHEETS-SHEET 2.

WI T NESS.'

1. H; BEHEE 's'cnou. CUTTING MACHINE. APPLICATIQII 'EILED AUG. 19, 1918. 1,337,428. Patented Apr. 20, 1920.

4- SHEETS-SHEET 3- WITNESS: INVEN TOR.

M 'A TTORNEY I. H. BEHEE.

SCROLL CUTTING MACHINE. APPLICATION. FJLED AUG. 19,1918.

1,337,428.. Patented Apr. 20,1920.

4 SHEETSSHEET 4.

WITNESSf v lzw zvrok.

E A. waif #34 A TTQRNE y JOSEPH H. BEHEE, or LEAVENWOBTH, KANSAS.

scRoLL-oU'rriNe MACHINE.

Specification of Letters Patent.

Patented Apr. 20, 1920.

Application filed August 19, 1918. Serial No. 250,568.

To all whom it may concern:

lie it known that I, JOSEPH H. BEHEE, a citizen the United States, and a resident of Leavenworth, in the county-of Leavenworth and State of Kansas, have. invented a certain new and useful Improvement in Scroll-Cutting Machines, of which the following is a specification.

My invention relates to improvements in Scroll Cutting Machines.

It is particularly adapted for cutting the scrolls on the outer end of a violin neck.

The object of my invention is to provide a novel scroll cutting machine by which a scroll may be quickly, accurately and cheaply cut.

is. further object of my invention is to provide a scroll cutting machine which is simple in construction, which is strong and (f able and not liable to get out of order, and which may be readily operated by an unskilled person.

The novel features of my invention are hereinafter fully described and claimed.

in the accompanying drawings, which illustrate the preferred embodiment of my invention,

Fig. 1 is a side elevation of my improved scroll cutting machine arranged to out scrolls in a violin neck.

Fig. 2 is a top view of the same, showing the tool supporting member at one limit of its movement, in a lengthwise direction.

Fig. a *iew similar to Fig. 2, showing the tool supporting member at the other limit of its lengthwise movement.

Fig. 41: is an enlarged horizontal sectional view, on the line 1-4 of Fig. 1.

5 is an enlarged vertical sectional view on the line 55 of Fig. 1.

Fig. 6 is a vertical sectional view on the line 66 of Fig. 3.

Fig. 7 is a horizontal sectionalview on the line 77 of Fig. 1.

Similar reference characters designate similar parts in the different views.

1 designates the main frame of the machine, which frame may be of any desired form and material, the frame shown being formed of angle bars folded together.

llotatably mounted in the frame 1 are two work supporting members comprising respectively two horizontal spur gear wheels 2 and 3, respectively secured to and rotatable with two vertical shafts 1 and 5, each of which is rotatable and vertically slidable in bearings 6 with which the frame 1 at oppositc ends is provided.

A tool supporting member comprising preferably a horizontal longitudinal rotary shaft 7 is rotatable and longitudinally slidable in bearings 8 provided in the upper part ofthe frame 1. The shaft 7 extends radially over the gear wheels 2 and 3 and has its ends disposed respectively adjacent to the centers of said wheels.

' 9 and 10 designate respectively two circular beveled cutters, the beveled cutting faces of which, preferably converge inwardly.

. The two tools comprising the two cutters 9 and 10 are adapted to respectively consecutively cut the two scrolls 11 and 12, Fig. 1, which are at the outer end of a riolin neck 13.

F or supporting the violin neck 13 on the wheels 2 and 3, so that the cutters 9 and 10 can cut the scrolls 11 and 12, I provide two neck holding devices, as shown in the drawings. These two devices are alike so that a description of onewill suffice for both.

I will now describe the neck holding device which is mounted upon the gear wheel 2.

1i designates a block having in its upper side a recess 15, in which is fitted and adapted to be held the neck 13. The block 1a is rigidly secured to the upper side of a plate 16 which is pivoted'adjacent to its outer end by a horizontal pin 17 to a base plate 18, which is rigidly secured to the top of the wheel 2.

For clamping the violin neck 13 in the cutting-position tightly to the block A, I provide a horizontal slightly resilient clamping plate 19, Fig. 6, which is mounted upon vertical blocks 20, which are supported by the work supporting gear wheel, to which the blocks are clamped by means of vertical bolts 21, which extend through the clamping plate 19, and are secured at their lower ends to the gear wheel 2 or 3 as the case may be.

For forcing the block 14 and plate 16 upwardly to the operative position, shown in Figs. 1 and 6, with the violin neck 13 held clamped at its upper side against the under side of the spring clamping plate 19, I provide a right-angled lever 22, having one of its arms disposed horizontally and pivotally mounted in a transverse groove 23 which is provided in the upper side of the base plate 18, as shown in Fig. 1. Said arm is provided with a lug 2 1 extending radially therefrom and adapted to be swung from the operative vertical position, shown in Fig. 1, to a horizontal position, in which latter position, the plate 16 and block lt may be swung downwardly to bring the neck 13 out of engagement with the clamping plate 19. When the block 14: is in this inclined position, a neck 13 may be placed in or removed from the recess 15. When the neck which is to be out has been placed in the recess 15, and the lever 22 is swung to the position shown in Figs. 1 and 6, the lug 2 1, which engages the under side of the plate 16 will force the latter and the block 14: to a position in which the neck 13 will be held tightly clamped against the under side of the clamping plate 19, in which position, the cutter 9 or 10, as the case may be, may be operated to cut the scroll in the side of the neck which i uppermost.

For rotating the shaft 7, it has rigidly secured to it at its center a pulley 25, which is adapted to be driven by a driving belt not shown.

In order that a true scroll may be accurately cut in the violin neck, it is essential. that, while the work supporting member,

which carries the neck, is being rotated, it

If in cutting the scroll in the neck, the

cutter 9 or 10 is moved toward the axis of the work supporting member, the changing rate of speed of movement of the shaft 7 toward the axis of the work supporting member, should be a diminishing rate of speed.

I will now describe the mechanism by which the shaft 7 and cutting tools 9 and 10 are moved at a diminishing rate of speed alternately in opposite directions simultaneously with the rotation of the wheels 2 and 3, and while the latter are rotating at a uniform rate of speed. Referring particularly to Figs. 1 and 2, 26 and 27 designate'respectively two spur gear wheels which respectively mesh with the gear wheels 2 and 3 and which are respectively rigidly secured to two vertical shafts 28 and 29 which are rotatable in the frame 1.

In order that the shaft 29 may be manu ally rotated, it has secured to its upper end a crank 30.

For transmitting rotation from the shaft 29 to the shaft 28, there is provided a chain belt 31 which is mounted upon two sprocket wheels 32 and 33 respectively secured to the shafts 28 and 29.

When the operator turns the crank 30 in a clockwise direction, as viewed in Fig. 2, the gear wheels 2 and 3 will both be turned counter-clockwise by means of the mechanism just above described.

For moving the shaft 7 endwise, when the crank 30 is turned, the shaft 29 has secured to it a bevel gear wheel 3 1, Fig. 1, which meshes with a bevel gear wheel 35, which is secured to one end of a horizontal longitudinal worm shaft 36 which is rotatably mount ed in horizontal arms 37 of a plate 38, which is secured to and supported by the main frame 1. The worm 39 of the worm shaft 36 meshes with two horizontal worm wheels 40 and 41, which are rotatably mounted on a bracket 12 which is secured to andsupported by the plate 38.

The worm wheels 10 and a1 are respectively provided with crank pins 13 and l i which are adapted to respectively releasably and slidably engage two pairs of parallel radial arms 15 and 16 with which two collars 17 and i8 are respectively provided.

The collars a7 and 18 are pivot-ally mounted on a horizontal longitudinally slidable barf19, which is parallel with the shaft 7 and which is longitudinally slidable in the bracket 42.

Between the collars -17 and 18 on the bar 4.) is a collar 50, having a laterally extend in bifurcated arm 51, which is mounted in a peripheral annular groove provided. in the pulley 25.

For holding the collars d7, &8 and from longitudinal movement on the bar 1-9. said bar is provided with two transverse pins 53 and 5%, between which said collars are mounted and against which the collars 17 and 4:8 are adapted to have their outer ends respectively engage.

By swinging the collars 17 and d8 on the bar 49. the arms 15 and 16 may be made to independently engage or disengage with the crank pins 1-3 and 14. 7

hen the crank 30 is turned clockwise. as viewed in F 2, the worm wheels at) and ll will also be turned clockwise means of the shaft 29, bevel gears aid 35 and worn'i shaft 36. The crank pin l3 engaging with the arms will force the In the operation of the invention, the violin neck blank is first inserted in the lock 1a: on the wheel 3, the parts being as shown in Fig. 2. The crank 30 is the turned clockwise until the wheels 2 and 3 have turned nearly two complete revolutions to the position shown in Fig. 3. The scroll 12 will then have been cut in one side of the neck. The latter is then inserted scroll side down in the block let on the wheel 2, tollowin g which, after the neck has been clamped in position, the crank 30 is turned counter clockwise nearly two revolutions, or to the orginal position shown in Fig. 2, at which time, the cutter 9 will have cut the scroll 11 in the other side of the violin neck. The neck is then removed and another neck is placed in the block ll on the wheel 3, following which the above operation is repeated.

1 do not limit my invention to the structure shown and described, as modifications, within the scope oi the appended claims, may be made without departing from the spirit of my invention.

lVhat I claim is l. in a scroll cutting machine, a tool supporting member, a work supporting member, means for rotating the work supporting member and for simultaneously moving the other member at a diminishing rate of speed transversely to the axis of the rotatable member, and means for moving one of said members parallel. with the axis of the rotatable member simultaneously with the rotation of the latter.

2. in a scroll cutting machine, a tool supporting member, a work supportingmember, means for simultaneously rotating the work supporting member and moving the other member at a changing rate of speed transversely to the axis of the rotatable member, and means for moving one of said members parallel with the axis of the rotatable member simultaneously with the rotation of the latter.

3. In a scroll cutting machine, a tool supporting meml er, a work supporting member, means for rotating the work supporting member and simultaneously moving the other member transversely to the axis of the rotatable member, and means for moving one of said members al"ernately dillerent distances in opposite directions parallel with the axis of the rotatable member during one revolution of the latter.

l. In a scroll cutting machine, a tool supporting member, a work supporting member, means for rotating the work supporting nember and simultaneously moving the other member transversely to the axis of the rotatable member, and means for moving one of said members alternately dii'lerent distances in opposite directions parallel with the axis of the rotatable member during each of a plurality of revolutions of the latter.

5. In a scroll cutting machine, a tool supporting member, a work supporting member, means for rotating tire work supporting member and simultaneously moving the other member at a changing rate of speed transversely to the axis of the rotatable member and means for moving one of said members alternately in opposite directions parallel with the axis of the rotatable member during one revolution oi the latter.

6. in a scroll cutting machine, a tool supporting member, a work supporting member, means for rotatin the work supporting member and simultaneously moving the other member at a changing rate of speed transversely to the axis of the rotatable member, and means for moving one of said members alternately different distances in opposite directions parallel with the axis of the rotatable member during one revolution of the latter.

T. in a scroll cutting machine, a work supporting member, a rotary tool supporting shat. means for rotating said member and simultaneously moving the shaft at a changing rate of speed transversely to the axis oi said member, and means for moving the work supporting member alternately in opposite directions parallel. with its axis and during a revolution of said member.

8. in a scroll cutting machine, a work supporting member, a rotary tool supporting shai't, means for rotating said member and simultaneously moving the shaft at a changing rate of speed transversely to the axis of said m mber, and means for moving the work supporting m mber a ternately different distances in opposite directions parallel with its axis and during a revolution of said member.

9. In a scroll cutting machine, a tool sup porting member, two work supporting mem bers each having means for holding a violin neck in position for being cut by a tool carried by the tool supporting member, and means for rotating the work supporting members and simultaneously moving the tool supporting member transversely to the axes of the work supporting members.

10. In ascroll cutting machine, a tool sup porting member, two work supporting members each hav n means for holding a violin neck in position for being cut by a tool carried by the tool supporting member, and means for rotating the work supporting members and simultaneously moving the tool supporting meml er at a changing rate of speed alternately in opposite directions transversely to the axes of the work supporting members.

11. In a scroll cutting machine, a tool supporting member, two work supporting members earn having means for holding a violin neck in position for being cut with a tool carried by the tool supporting member, and means for moving the tool supporting member at a changing rate of speed transversely to the axes of the work supporting members and simultaneously rotating the work supporting members.

12. In a scroll cutting machine, a tool supporting member, two work supporting members each having means for holding a violin neck in position for being cut with a tool carried by the tool supporting member, and means for rotating said work supporting members and simultaneously moving the tool supporting member at diminishing rate or" speed alternately in opposite directions transversely to the axes of the work supporting members.

13. In a scroll cutting machine, a tool supporting member, two work supporting members each having means for holding a violin neck in position for being cut by a tool carried by the tool suppor ing member, means for rotating the work supporting members and simultaneously moving the tool supporting member transversely to the axes of the work supporting members, and means for moving the latter parallel with their axes simultaneously with their rotation.

14:. In scroll cutting machine, a tool sup porting member, two work supporting members, each having means for holding a violin neck in position for being cut by a tool carried by the tool supporting member, means for rotating the work supporting members and simultaneously moving the tool supporting member at changing rate of speed alternately in opposite directions transversely to the axes oi? the work supporting members, and means for moving the work supporting members parallel with their axes during their rotation.

15. In a scroll cutting machine, a tool supporting member, two work supporting members, each having means for holding a violin neck in position for being cut by a tool carried by the tool supporting member, means for rotating the work supporting members and simultaneously moving the tool supporting member at a diminishin rate of speed alternately in opposite (in ctions transversely to the axes of the work supporting members, and means for moving the work supporting members parallel with their axes during their rotation.

16. In a scroll cutting machine, a tool supporting member, two work supporting members, two revoluble members, means for simultaneously rotating said revoluble members and said work supporting members, and means adapted to consecutively engage raid revoluble members for alternately moving the tool supporting member in opposite directions transversely to the axes of the work supporting members and at a changing rate of speed.

ii. in a scroll cutting machine, a tool supporting member, two work supporting members, a rotatable worm, two worm wheels meshing w "1 said worm, means for simultaneously ro inc; said worm and said work supporting members, and means actuated by said worm wheels for alternately moving the tool supporting member in opposite directions t ansi'erse y to the axes of the work suppo: ing members and at a changing rate of speed.

18. In a scroll cutting machine, a tool supportin member, two work supporting members, two revoluble members each ha ing a crank pin, means for simultaneously rotating the work supporting members and said revoluble members, and means adapted to alternately engage said crank pins for alternately moving said tool supporting member in opposite directions transversely to the axes of said work supporting members.

19. In a scroll cutting machine, two revoluble members, each having a crank pin, means for revolving said revoluble members, a tool supporting member, a reciprocative member, means by which the tool supportmember moves conjointly with said reciprocative memb r, and means adapted to alternately engage said crank pins for reciprocating said reciprocative member at a changing rate of speech 20. In a scroll cutting machine, a tool supporting member, a reciprocative bar, means for moving the tool supporting member conjointly with said bar, a revoluble member having a crank pin, means for revolving said revoluble member, and means movable with said bar and by said crank pin for moving the bar at a changing rate oi? speed while the revoluble member is revolving at an even rate of speed.

21. In a scroll cutting machine, a tool supporting member, a reciprocative bar. means connecting said bar and said member by which they move conjointly, two revoluble members, each having a crank pin, two connecting members movable with said bar and movable respectively into and out of driving engagement with said crank pins; and means for revolving said revoluble members.

22. In a scroll cutting machine. a tool supporting member, a reciprocative bar, two revoluble members, each having a crank pin, means connecting said bar and said member by which they move coniointly, two connectmembers pivoted to and movable with said bar and movable respectively into and out of driving engagement with said crank pins, and means for revolving said revoluble members.

23. In a scroll cutting machine, a tool supporting member, a rotary work supporting member, a support for a violin neck pivoted to said work supporting member, a clamping member carried by said work supporting member, and a lever for swinging said support into operative position relatively to said tool supporting member and in said position holding the violin neck against said clamping member.

2%. In a scroll cutting machine, a rotary work supporting member having means for 1 ,ss'mee holding a violin neck, a volute cam attached to and adapted to move the work supporting member parallel with the axis of the latter, a roller engaging and adapted to move said cam, supporting means on which the roller is mounted and movable radially with respect to the axis of said work sup porting member, and a tool supporting member movable transversely to the axis ot said m mber, and connections between said members by which they are simultaneously operated.

In testimony whereof I have signed my name to this specification.

JOSEPH H. BEHEE. 

